I got this Spectrum from a friend, probably in the end of the 1980s. It was said to be “damaged and not repairable”.
I refurbished this machine together with my own ZX Spectrum. It was my first refurbishment, and unfortunately I was a bit careless. In retrospect, I am not sure if I mixed up the original cases of both machines, so the serial numbers might be swapped.
Restauration Works
Restauration was carried out in May 2021
Modified the modulator to create a composite signal, reversible
General cleaning
Repaired a coil damage: Wound new coil, preemptively replaced TR4, TR5, D16
Replaced damaged CPU
All electrolytic capacitors replaced with new, long-live types
Replaced broken original keyboard membrane
New replica faceplate in standard color (the old was scratched and dented)
Replaced 7805 with Traco Power TSR-1 DC/DC converter, removed heatsink
Calibrated video output
Known Issues
Output signal has a yellow tint even after calibration. Colors are completely off. This may be due to ULA type 5.
History
2022-03-13: Calibrated video output
2021-03-22: New faceplate
2021-03-20: Repaired
Coil was burned. Wound new coil and replaced TR4, TR5, D16.
